Effect
If this card is sent from the field or the hand to the Graveyard: You can excavate the top card of your Deck, and if it is a Plant-Type monster, send it to the Graveyard. Otherwise, place it on the bottom of your Deck. If this card is excavated from the Deck and sent to the Graveyard by a card effect: You can excavate the top card of your Deck, and if it is a Plant-Type monster, send it to the Graveyard. Otherwise, place it on the bottom of your Deck.
The monster effect "If this card in your hand or on the field is sent to the GY: You can excavate the top card of your Deck, and if it is a Plant monster, send it to the GY, otherwise place it on the bottom of the Deck" is a Trigger Effect that activates in the GY. (It does not target. It can be activated not only when sent to the GY by a card effect, but also when sent to the GY as a cost to activate a card effect. It can also be activated during the Damage Step.)
The process of "excavate the top card of your Deck" is performed, and depending on the result, the process of "if it is a Plant monster, send it to the GY" or "otherwise place it on the bottom of the Deck" is performed.
The monster effect "If this card in your Deck is excavated by a card effect and sent to the GY: You can excavate the top card of your Deck, and if it is a Plant monster, send it to the GY, otherwise place it on the bottom of the Deck" is a Trigger Effect that activates in the GY. (It does not target. It cannot be activated if it is sent to the GY as a cost to activate a card effect. It can also be activated during the Damage Step.)
The process of "excavate the top card of your Deck" is performed, and depending on the result, the process of "if it is a Plant monster, send it to the GY" or "otherwise place it on the bottom of the Deck" is performed.
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